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Michael L Perry

Improving Enterprises

Principal Consultant


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Hands-on MVVM

As people apply data binding to real applications, patterns have emerged. One of the most prevalent is Model-View-ViewModel. In truth, MVVM is not just one pattern. It is a collection if interrelated patterns. Each person has a different idea of what MVVM actually looks like. This is my opinion.

We will walk through the emergence of MVVM in a WPF application. The goal of this exercise is to understand why it is good to follow these patterns. We are going to start with direct data binding. We won’t add any code until we need it. When we find that things don’t work, we’ll add code to make them work. When things start to get messy, we will refactor to clean them up.

  • Model and View
  • Dependent properties (but not DependencyProperties)
  • ItemsSource and SelectedItem
  • The ViewModel layer
  • Communicate through the data model

Slides and source code from the talk are at http://qedcode.com/mvvm.

Presented at:

  • Dallas Day of .NET - 3/4/2011

Dallas Day of Dot Net ...today

I attended your session today and came here but can't seem to find "walk through the emergence of MVVM"...your walk through.

Please advise

The walkthrough

My apologies. The walkthrough itself is at:


This post is the abstract of the talk. I'll link them together.